Cho 2 đường thẳng d1: 3x-y-3=0 và d2: x+y = 0. Phép đối xứng tâm I biến d1 thành d1': 3x-y+1 = 0 và biến d2 thành d2': x+y-6 = 0 là gì ?

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How does a low unemployment rate affect a nation's economy? a. the nation has a higher number of productive resources. b. the nation can spend more money on for unemployed people. c. the nation can save money by paying lower salaries to a large workforce. reset

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.